Thread: 66 Mustang trany fluid?

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What type of fluid should I put in my wife's 66 automatic tranny? Thanks!

i have heard that you can use mercon dextron or type f i have always just used type f Denny im running mercon dextron in my c6 that wont hurt it will it?

My tranny guy made Me run Dextron 2 in My C-4 in My 41 Ford.
It's been 6 years now still works Great.......Grabs 2 rubber...

if your trans runs type F now, you NEED to run type F, if you have it freshly rebuilt, dry, use whatever you want, just you can't switch to somthing else after you filled it up. '66 Mustang Cruisomatic C4 would have Type F originally.

Originally Posted by Matt167

if your trans runs type F now, you NEED to run type F, if you have it freshly rebuilt, dry, use whatever you want, just you can't switch to somthing else after you filled it up. '66 Mustang Cruisomatic C4 would have Type F originally.

Well we just bought a few weeks ago and who knows what is in it...LOL!

Originally Posted by youther

Well we just bought a few weeks ago and who knows what is in it...LOL!

call the previouse owner and ask what he/she put in it. if you put the wrong stuff in, you likely may need a trans rebuild.